Alpha Technologies INEX Inverter System - Manual (Page 21)

Argus Technologies Ltd. 014-114-C0 Rev D WC
Printed in Canada. © 2008 Argus Technologies Ltd. ARGUS and INEX are registered trademarks of Argus Technologies Ltd. All Rights Reserved. Page 11 of 43
4.5 Multi-Inverter Shelf System
CN20 and CN21 at the inverter shelf backplane are inter-parallel connectors for inverter synchronization. The
upper port is used to connect the inverter shelf above, and the lower port is used to connect the inverter shelf
below.
1. Use the flat communication cables provided to connect all
available inverter shelves:
2. Use the supplied bus bars for connecting the DC negative input (BAT-) studs of all available shelves together
with M5x12 cross hex-washer type nickel screws and washers. See Table A.
3. Similarly, connect DC positive input (BAT+) studs of all shelves together.
4. Do the same for AC neutral (UC3), AC ground (UC4) and AC line (UC5) studs individually:
NOTE: Spacers supplied are required on the last (bottom) shelf for AC bars.
CAUTION
Ensure that no jumper is inserted into JP2 connector of all connected inverter shelves.
5. Choose appropriate gauge wire with consideration for the total input current of the whole inverter system,
distance from the battery, and local wiring rules.
6. Thread two battery cables through left-side panel knockout, and attach one battery cable to one DC negative
input stud (BAT-) and the other to one DC positive input stud (BAT+).
CAUTION
Reverse polarity connections would damage the unit and is not cover by the warranty. Ensure
correct polarity (positive to positive, negative to negative) before completing connections
between battery and INEX inverter unit.
7. Secure the connection with two supplied cross hex-washer type nickel screws and washers as shown.
8. Install the battery cables to battery or 48Vdc source.
WARNING
DC source voltage should be between 45V and 58V.